Evidence map›Paper›PMID 26168223›Full record

Trial reportThe Journal of clinical investigation2015

Azathioprine therapy selectively ablates human Vδ2⁺ T cells in Crohn's disease.

Neil E McCarthy, Charlotte R Hedin, Theodore J Sanders, Protima Amon, Inva Hoti, Ibrahim Ayada, Vidya Baji, Edward M Giles, Martha Wildemann, Zora Bashir and 4 more

Open access · greenAbstract readClinical TrialMulticenter Study
In one paragraph

Trial report in The Journal of clinical investigation, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.8field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 47 citations in OpenAlex.

  1. Trial
  2. Review
  3. Observational
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Gut-homing Δ42PD1Nature microbiology · 2017
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 1 institution in 1 country.

Neil E McCarthy
Charlotte R Hedin
Theodore J Sanders
Protima Amon
Inva Hoti
Ibrahim Ayada
Vidya Baji
Edward M Giles
Martha Wildemann
Zora Bashir
Kevin Whelan
Ian Sanderson
James O Lindsay
Andrew J Stagg
King's College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tumor-derived and bacterial phosphoantigens are recognized by unconventional lymphocytes that express a Vγ9Vδ2 T cell receptor (Vδ2 T cells) and mediate host protection against microbial infections and malignancies. Vδ2 T cells are absent in rodents but readily populate the human intestine, where their function is largely unknown. Here, we assessed Vδ2 T cell phenotype and function by flow cytometry in blood and intestinal tissue from Crohn's disease patients (CD patients) and healthy controls. Blood from CD patients included an increased percentage of gut-tropic integrin β7-expressing Vδ2 T cells, while "Th1-committed" CD27-expressing Vδ2 T cells were selectively depleted. A corresponding population of CD27+ Vδ2 T cells was present in mucosal biopsies from CD patients and produced elevated levels of TNFα compared with controls. In colonic mucosa from CD patients, Vδ2 T cell production of TNFα was reduced by pharmacological blockade of retinoic acid receptor-α (RARα) signaling, indicating that dietary vitamin metabolites can influence Vδ2 T cell function in inflamed intestine. Vδ2 T cells were ablated in blood and tissue from CD patients receiving azathioprine (AZA) therapy, and posttreatment Vδ2 T cell recovery correlated with time since drug withdrawal and inversely correlated with patient age. These results indicate that human Vδ2 T cells exert proinflammatory effects in CD that are modified by dietary vitamin metabolites and ablated by AZA therapy, which may help resolve intestinal inflammation but could increase malignancy risk by impairing systemic tumor surveillance.

Indexed as

Crohn DiseaseIntestinal MucosaT-LymphocytesAdolescentAdultAgedAzathioprineChildChild, PreschoolFemaleHumansImmunosuppressive AgentsMaleMiddle AgedReceptors, Antigen, T-Cell, gamma-deltaReceptors, Retinoic AcidAzathioprineImmunosuppressive AgentsRARA protein, humanReceptors, Antigen, T-Cell, gamma-deltaReceptors, Retinoic AcidRetinoic Acid Receptor alphaTumor Necrosis Factor-alpha

Identifiers

PMID26168223
PMCPMC4563752
OpenAlexW1869494113

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.